"I have never listened to, or commented on, the rumours about any aspect of my life. I am blessed to have a wonderful husband and beautiful, healthy, happy children. Yes, we travel a lot with our respective businesses and charitable commitments, but we always make time for each other as a couple and as a family. David and I have nothing to prove. We love each other, look out for each other and are strong as both partners and parents."

She also praises her hubby!

"My husband constantly inspires me and guides me – he has done so much good work, I look up to him and have the utmost respect and admiration for all that he has achieved. David and I both have a strong work ethic and I believe that's a good example to set our children. David and I explain to the children what privileged lives they lead. We tell them that in many places in the world children are hungry, homeless and sick. They all understand how important it is to help others. Romeo ran the children's marathon earlier this year and raised an amazing amount of money through sponsorship, which he divided between David's charity and UNAIDS."

The designer and mom-of-four further admits that her life is a lot of hard work:

"Of course it's hard [juggling career and motherhood]. But I'm like any working mum, albeit with a bit of extra help. Every mother is rushing around on a Sunday night looking for homework and school uniform, juggling ballet lessons and football practice with work meetings and travel."

Zayn previewed the duet by posting a black and white pic of himself with Swifty on his Instagram -- but hey, she is bestiez with his girlfriend Gigi Hadid, so it wouldn't be unusual that they hang out... But collab?!